Smack Down Tyranitar Raids?

Yes, it's been confirmed that raid Tyrannitars will have Smack Down

Every raided Tyranitar will have Smack Down during CD hours.

The last I heard off Reddit is that what 's unknown is whether the boss itself will attack exclusively with Smack Down, or whether Bite and Iron Tail will still be possible.

I think it was established on previous community days that wild caught specimens of the pokemon in question would have the special move, e.g. Charizard had Blast Burn.

Based on that, I think it's reasonable to assume that any Tyranitar encountered in the game during the community day hours (whether it be evolved, caught wild, or won from a raid) would have Smack Down.